body, div, span, header, footer, nav, section, aside, article, ul, dl, dt, dd, li, a, p, h1, h2, h3, h4,h5, h6, i, b, textarea, button, input, select, figure, figcaption, {
    padding: 0;
    margin: 0;
    list-style: none;
    font-style: normal;
    text-decoration: none;
    border: none;
    color: #333;
    font-weight: normal;
    font-family: "Microsoft Yahei";
    box-sizing: border-box;
    -webkit-tap-highlight-color:transparent;
    -webkit-font-smoothing: antialiased;
    &:hover{
        outline: none;
    }
}
html,body{
    height: 100%;
    width: 100%;
    background-color: #F5F5F5;
}
input{
    -webkit-appearance:none;
}
.clear:after{
    content: '';
    display: block;
    clear: both;
}

.clear{
    zoom:1;
}
.ellipsis{
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
input[type="button"], input[type="submit"], input[type="search"], input[type="reset"] {
    -webkit-appearance: none;
}
@keyframes backOpacity{
    0%   { opacity: 1 }
    25%  { opacity: .5 }
    50%  { opacity: 1 }
    75%  { opacity: .5 }
    100% { opacity: 1 }
 }
.animation_opactiy{
    animation: backOpacity 2s ease-in-out infinite;
}